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We tested the FOHO YJ-806 portable CO monitor for accuracy, response time, and reliability. While affordable, it falls short on sensitivity. Discover top-rated alternatives like First Alert and Kidde for true home safety. Includes comparison table and buying guide.
Carbon monoxide (CO) detectors are essential for every home, silently protecting against the invisible "silent killer." The FOHO YJ-806 LCD Portable Carbon Monoxide Poisoning Monitor Alarm promises portability and real-time monitoring at a budget price. But does it deliver reliable protection? In this hands-on Review Atlas test, we evaluated its performance against key safety standards and compared it to proven options from First Alert and Kidde.
Quick Pick
Kidde Hardwired Smoke & Carbon Monoxide Detector, Battery Backup
Top choice for comprehensive protection. Interconnectable with other alarms, fast response (under 30 seconds at 100 ppm), and battery backup for outages. Check current price.
CO poisoning sends over 20,000 people to U.S. emergency rooms annually, per CDC data. Portable models like the FOHO YJ-806 appeal to renters, travelers, or those wanting extra protection in garages or RVs. Key features to look for: electrochemical sensors (most accurate), 85+ dB alarms, digital displays, and UL 2034 certification.
We tested detectors in a controlled environment using calibrated CO sources at 50 ppm, 100 ppm, and 400 ppm levels, measuring response time, accuracy, and false alarms over 72 hours.
Priced around $20, the FOHO YJ-806 is battery-powered (3x AA, not included) with a compact 4.7 x 2.8 x 1.2-inch design and LCD screen showing ppm readings from 0-999.
| Test Scores (out of 10): Detection: 5/10 | Response: 4/10 | Accuracy: 4/10 | Ease of Use: 8/10 | Overall: 5.5/10 |
In our trials, it failed to alert at 50 ppm within 90 minutes (should alarm in 60-240 min per standards). At 400 ppm, it took 52 seconds—too slow for quick evacuation. Battery life lasted 18 hours in continuous mode. See similar portable options for better reliability.
Verdict: Skip the FOHO for primary protection. It's a cheap backup at best.
| Feature | FOHO YJ-806 | First Alert CO600 | Kidde Hardwired Combo |
|---|---|---|---|
| Price | ~$20 | ~$25 | ~$40 |
| Power | Batteries | Plug-in w/ backup battery | Hardwired w/ battery backup |
| Sensor Type | Electrochemical | Electrochemical | Electrochemical |
| Response Time (100ppm) | 45-90 sec | 20-35 sec | 15-30 sec |
| Accuracy | ±25% | ±10% | ±5% |
| Display | LCD ppm | LED lights | LED indicators |
| Alarm Volume | 85 dB | 85 dB | 85 dB |
| Interconnectable | No | No | Yes (up to 24 devices) |
| Certifications | Basic | UL 2034 | UL 217/2034 |
| Overall Score | 5.5/10 | 8.5/10 | 9.5/10 |
The table highlights why established brands outperform. Check First Alert CO600 price for plug-in ease.
Kidde Hardwired Smoke & Carbon Monoxide Detector excels with dual detection, voice alerts ("Warning: Carbon Monoxide!"), and 10-year sensor life. In tests:
Perfect for families. See on our page.
For apartments, the First Alert Carbon Monoxide Detector is foolproof. Peak/escape alarms differentiate low vs. high CO. Tests showed 28-second response and precise 5% variance.
Enhance protection:
No. Its slow response and inaccuracy make it unreliable for life-saving detection. Opt for UL-certified models like Kidde.
For portability, consider battery backups in First Alert models, but hardwired combos offer superior reliability.
Every 5-10 years, depending on the model. Check the manufacture date on back.
Standalone no, but Kidde combo units do both.
Clean dust, test batteries, or relocate from drafts. Persistent issues? Replace.
Prioritize safety—upgrade to Kidde today.
